THE PASTEURIZATION OF MILK 



tion would be therefore comparatively small. It 

 is also a known fact that while tubercle bacilli will 

 live in milk, they will not multiply. 



The apprehension experienced by many persons 

 that they may be infected with tuberculosis from 

 the milk which they consume should be lessened 

 by their knowledge of this further fact, namely, 

 that tuberculosis of the bovine type with which 

 cattle are affected is rarely infectious to human 

 beings who are over fifteen years of age, and 

 rarely causes fatal tuberculosis in children over 

 five years old. The careful examination of hun- 

 dreds of cases where death has occurred from 

 tuberculosis among children appears to conclu- 

 sively show that the danger of infection from bo- 

 vine tuberculosis is largely limited to persons 

 under fifteen years of age. Of deaths from tuber- 

 culous affections of persons under this age, only 

 10 per cent, had tuberculosis of the bovine type. 

 This has been determined for New York City by 

 investigations carried on by Park and his col- 

 leagues, extending over several years, and the same 

 conclusions have been reached by European sci- 

 entists. 



The records of New York City for the years 

 20 



